PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/30-21:58:00
G01     99.7           29.0               12.2 +/-    1.06      21.7 +/-    1.06  0.150 / 0.210
G07     116.5          53.1               13.1 +/-    0.54      15.9 +/-    0.54  0.230 / 0.180
G08     42.1           18.3                9.2 +/-    1.64      21.2 +/-    1.64  0.070 / 0.090
G11     82.0           43.2               11.3 +/-    1.47      15.7 +/-    1.47  0.100 / 0.140
G13     303.8          32.2                9.5 +/-    1.27      15.9 +/-    1.27  0.030 / 0.040
G17     210.2          41.4               13.3 +/-    1.09      18.9 +/-    1.09  0.030 / 0.040
G18     73.3           24.9               10.4 +/-    1.05      20.4 +/-    1.05  0.020 / 0.030
G19     211.4          19.0               13.0 +/-    7.91      29.4 +/-    7.91  0.030 / 0.030
G28     333.4          61.8                9.9 +/-    0.39      11.1 +/-    0.39  0.070 / 0.060
G30     75.4           78.2               12.6 +/-    0.73      12.8 +/-    0.73  0.050 / 0.040