PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/12-03:58:10
G01     76.7           33.3                4.0 +/-    0.89       6.6 +/-    0.89  0.040 / 0.050
G07     134.3          35.4                5.3 +/-    0.69       8.4 +/-    0.69  0.030 / 0.050
G11     58.7           34.8                2.1 +/-    0.46       3.3 +/-    0.46  0.110 / 0.230
G13     282.1          37.3                4.9 +/-    0.98       7.5 +/-    0.98  0.120 / 0.350
G15     306.2          14.6                2.5 +/-    1.83       6.3 +/-    1.83  0.040 / 0.040
G17     226.0          64.6                6.9 +/-    0.92       7.5 +/-    0.92  0.040 / 0.030
G19     220.8          38.4                8.0 +/-    1.19      12.0 +/-    1.19  0.050 / 0.080
G28     12.1           60.1                2.2 +/-    0.75       2.5 +/-    0.75  0.050 / 0.080
G30     129.5          63.4                4.0 +/-    0.59       4.4 +/-    0.59  0.070 / 0.110