PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/18-00:27:50
G02     199.9          21.0                8.1 +/-    2.10      17.4 +/-    2.10  0.070 / 0.110
G06     175.7          49.5                8.7 +/-    0.91      11.1 +/-    0.91  0.110 / 0.120
G13     226.7          13.5                4.9 +/-   24.72      12.6 +/-   24.72  0.040 / 0.030
G17     23.8           58.8                6.9 +/-    0.55       7.9 +/-    0.55  0.040 / 0.030
G19     320.1          71.2                6.4 +/-    0.77       6.7 +/-    0.77  0.250 / 1.070
G24     309.0          30.9                6.7 +/-    1.19      11.6 +/-    1.19  0.180 / 0.540
G28     84.7           43.0                7.4 +/-    0.84      10.3 +/-    0.84  0.060 / 0.070
G30     156.9          14.5               11.7 +/-    1.85      29.5 +/-    1.85  0.060 / 0.060