PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/08-14:12:50
G01     61.1           30.9                9.1 +/-    0.72      15.6 +/-    0.72  0.040 / 0.050
G07     141.8          23.1                9.3 +/-    2.06      19.1 +/-    2.06  0.050 / 0.060
G11     48.2           23.6                6.8 +/-    0.95      13.8 +/-    0.95  0.050 / 0.080
G13     263.4          35.7                9.6 +/-    0.94      15.0 +/-    0.94  0.050 / 0.100
G15     297.8          14.9                5.7 +/-    2.47      14.2 +/-    2.47  0.060 / 0.170
G17     257.9          76.8                9.5 +/-    0.82       9.7 +/-    0.82  0.060 / 0.160
G18     42.6           13.1                6.2 +/-    0.97      16.1 +/-    0.97  0.080 / 0.140
G19     230.9          46.3                9.7 +/-    2.04      12.9 +/-    2.04  0.080 / 0.160
G28     33.8           57.1                8.7 +/-    0.41      10.1 +/-    0.41  0.040 / 0.060
G30     143.3          54.8               10.2 +/-    0.57      12.2 +/-    0.57  0.040 / 0.050