PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/16-15:13:00
G01     79.6           33.2               10.0 +/-    0.74      16.4 +/-    0.74  0.030 / 0.040
G07     132.7          37.7               12.3 +/-    0.95      18.7 +/-    0.95  0.030 / 0.030
G11     59.1           35.0                8.4 +/-    0.47      13.4 +/-    0.47  0.040 / 0.060
G13     283.7          37.8                9.8 +/-    0.88      14.8 +/-    0.88  0.040 / 0.050
G15     310.7          11.9                7.7 +/-    1.27      20.6 +/-    1.27  0.060 / 0.130
G17     222.7          62.1               12.1 +/-    0.83      13.5 +/-    0.83  0.060 / 0.110
G18     55.0           21.2                7.3 +/-    1.33      15.6 +/-    1.33  0.050 / 0.080
G19     219.3          32.4               11.8 +/-    3.60      19.7 +/-    3.60  0.050 / 0.090
G28     6.0            60.8               10.3 +/-    0.78      11.7 +/-    0.78  0.050 / 0.110
G30     125.3          69.7               10.3 +/-    0.42      10.9 +/-    0.42  0.040 / 0.120