PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/25-17:57:20
G02     20.4           64.4               10.2 +/-    0.34      11.2 +/-    0.34  0.030 / 0.040
G05     151.7          54.1               12.3 +/-    1.04      14.8 +/-    1.04  0.030 / 0.040
G06     50.2           20.1                8.9 +/-    1.93      19.4 +/-    1.93  0.070 / 0.100
G12     198.0          73.6               11.4 +/-    0.98      11.8 +/-    0.98  0.140 / 0.090
G19     91.8           17.8               10.4 +/-    3.01      24.1 +/-    3.01  0.030 / 0.020
G25     306.3          48.4               11.0 +/-    2.89      14.2 +/-    2.89  0.020 / 0.030
G29     300.7          20.7               11.5 +/-    0.82      24.9 +/-    0.82  0.110 / 0.180