PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/05-22:42:50
G01     61.8           31.1               12.8 +/-    1.12      21.9 +/-    1.12  0.110 / 0.370
G07     141.6          24.2               13.9 +/-    1.64      27.7 +/-    1.64  0.100 / 0.250
G11     50.0           26.7                8.5 +/-    2.49      15.9 +/-    2.49  0.070 / 0.090
G13     265.0          35.7               15.6 +/-    1.39      24.5 +/-    1.39  0.060 / 0.070
G15     295.0          16.5               10.3 +/-    1.71      24.8 +/-    1.71  0.080 / 0.130
G17     247.5          71.3               13.4 +/-    0.67      14.1 +/-    0.67  0.110 / 0.160
G18     43.8           14.3                8.5 +/-    1.67      21.5 +/-    1.67  0.030 / 0.040
G19     231.1          48.7               13.7 +/-    2.24      17.6 +/-    2.24  0.050 / 0.080
G28     33.9           56.9               13.8 +/-    0.70      16.1 +/-    0.70  0.030 / 0.030
G30     142.1          51.5               14.1 +/-    0.52      17.4 +/-    0.52  0.030 / 0.030