PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/04-21:27:40
G02     22.0           63.9                8.2 +/-    0.72       9.1 +/-    0.72  0.040 / 0.050
G05     151.1          53.6               12.6 +/-    0.56      15.2 +/-    0.56  0.040 / 0.050
G06     49.4           21.8                6.7 +/-    0.76      14.2 +/-    0.76  0.030 / 0.040
G12     209.7          76.1                8.8 +/-    0.79       9.0 +/-    0.79  0.030 / 0.040
G19     91.3           17.7               10.2 +/-    1.61      23.9 +/-    1.61  0.060 / 0.070
G25     308.0          46.5                9.4 +/-    1.12      12.4 +/-    1.12  0.050 / 0.090
G29     300.0          20.1               10.5 +/-    1.40      23.1 +/-    1.40  0.040 / 0.050