PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/28-03:57:40
G01     79.0           33.1                9.1 +/-    0.97      15.0 +/-    0.97  0.040 / 0.070
G07     133.0          34.7               10.6 +/-    0.81      16.9 +/-    0.81  0.040 / 0.090
G11     57.6           34.0                5.1 +/-    0.62       8.3 +/-    0.62  0.040 / 0.060
G13     282.8          38.2                4.9 +/-    1.28       7.4 +/-    1.28  0.040 / 0.050
G15     309.3          12.8                2.0 +/-    1.27       5.2 +/-    1.27  0.080 / 0.220
G17     222.7          65.7                8.6 +/-    0.47       9.4 +/-    0.47  0.070 / 0.170
G18     51.7           18.9                5.8 +/-    0.80      13.2 +/-    0.80  0.080 / 0.090
G19     219.2          33.8                7.4 +/-    1.29      12.1 +/-    1.29  0.080 / 0.100
G28     2.0            61.2                6.6 +/-    0.52       7.5 +/-    0.52  0.040 / 0.040
G30     126.1          69.8                9.0 +/-    0.63       9.5 +/-    0.63  0.030 / 0.040