PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/03-20:42:50
G01     64.6           31.9               12.1 +/-    0.67      20.3 +/-    0.67  0.090 / 0.390
G07     140.4          26.5               15.0 +/-    0.97      28.4 +/-    0.97  0.090 / 0.360
G11     51.0           27.9                9.0 +/-    1.16      16.5 +/-    1.16  0.060 / 0.070
G13     267.9          36.4               14.0 +/-    1.51      21.7 +/-    1.51  0.050 / 0.100
G15     297.9          16.0               12.1 +/-    3.31      29.4 +/-    3.31  0.080 / 0.120
G17     241.8          69.5               14.4 +/-    0.90      15.3 +/-    0.90  0.070 / 0.120
G18     45.4           15.7                8.7 +/-    1.61      21.2 +/-    1.61  0.080 / 0.160
G19     228.6          45.8               16.6 +/-    1.12      22.1 +/-    1.12  0.090 / 0.170
G28     29.5           57.8               11.8 +/-    0.73      13.7 +/-    0.73  0.040 / 0.060
G30     140.4          55.1               14.3 +/-    0.99      17.0 +/-    0.99  0.040 / 0.050