PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/22-21:27:50
G01     64.6           31.9               13.0 +/-    0.57      21.9 +/-    0.57  0.110 / 0.370
G07     140.4          26.5               16.9 +/-    1.04      31.8 +/-    1.04  0.100 / 0.280
G11     51.1           28.2               10.3 +/-    0.46      18.8 +/-    0.46  0.050 / 0.080
G13     268.0          36.4               14.7 +/-    1.63      22.7 +/-    1.63  0.050 / 0.080
G15     297.7          16.1               12.4 +/-    1.94      29.9 +/-    1.94  0.040 / 0.050
G17     241.3          68.9               15.4 +/-    1.00      16.4 +/-    1.00  0.050 / 0.060
G18     45.4           15.7               10.6 +/-    2.19      25.9 +/-    2.19  0.060 / 0.120
G19     228.6          46.1               17.0 +/-    0.91      22.5 +/-    0.91  0.060 / 0.100
G28     29.6           57.7               12.2 +/-    0.69      14.1 +/-    0.69  0.060 / 0.160
G30     140.3          54.7               14.5 +/-    0.62      17.3 +/-    0.62  0.080 / 0.180