PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/12-17:57:40
G01     315.4          24.6                6.8 +/-    1.01      13.5 +/-    1.01  0.160 / 0.320
G10     91.6           48.7                8.5 +/-    0.68      10.8 +/-    0.68  0.130 / 0.230
G11     296.5          25.5                7.4 +/-    1.67      14.4 +/-    1.67  0.100 / 0.190
G14     322.5          70.7                7.5 +/-    0.61       7.9 +/-    0.61  0.080 / 0.200
G18     109.4          21.2                9.4 +/-    1.55      20.0 +/-    1.55  0.040 / 0.060
G22     304.7          16.7                4.6 +/-    2.31      11.1 +/-    2.31  0.030 / 0.050
G25     94.0           12.2               10.8 +/-    1.89      28.8 +/-    1.89  0.140 / 0.330
G31     174.4          51.0               10.5 +/-    1.09      13.1 +/-    1.09  0.150 / 0.320
G32     21.2           61.4                7.2 +/-    0.48       8.0 +/-    0.48  0.030 / 0.040