PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/12-17:12:40
G02     230.1          69.0                8.6 +/-    0.51       9.1 +/-    0.51  0.250 / 0.390
G05     173.9          11.9                3.3 +/-   19.60       8.9 +/-   19.60  0.200 / 0.390
G06     42.6           60.8                8.0 +/-    0.44       9.0 +/-    0.44  0.060 / 0.110
G12     322.7          51.9                7.7 +/-    0.49       9.5 +/-    0.49  0.100 / 0.090
G17     67.7           24.1                7.6 +/-    2.86      15.1 +/-    2.86  0.040 / 0.040
G19     49.2           44.4                7.6 +/-    1.55      10.3 +/-    1.55  0.030 / 0.040
G24     248.3          37.2               11.3 +/-    0.98      17.2 +/-    0.98  0.030 / 0.030