PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/28-21:58:00
G01     103.7          27.3               10.3 +/-    1.49      19.2 +/-    1.49  0.210 / 0.230
G07     111.5          56.2               12.0 +/-    0.41      14.1 +/-    0.41  0.160 / 0.140
G08     42.2           21.4                8.9 +/-    2.60      18.9 +/-    2.60  0.030 / 0.030
G09     174.8          11.5               13.1 +/-    2.05      35.5 +/-    2.05  0.030 / 0.030
G11     87.4           43.5               11.0 +/-    1.62      15.2 +/-    1.62  0.060 / 0.130
G13     307.3          30.2               10.6 +/-    1.14      18.5 +/-    1.14  0.100 / 0.130
G17     208.3          37.7               12.2 +/-    1.31      18.4 +/-    1.31  0.040 / 0.040
G18     77.4           24.7                9.8 +/-    1.81      19.3 +/-    1.81  0.020 / 0.040
G28     325.7          61.5                9.4 +/-    0.72      10.6 +/-    0.72  0.050 / 0.050
G30     55.5           78.7               12.4 +/-    1.07      12.7 +/-    1.07  0.040 / 0.050