PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/22-00:42:40
G02     31.2           57.2                9.3 +/-    0.63      10.8 +/-    0.63  0.040 / 0.030
G05     140.9          60.3               13.1 +/-    0.96      14.8 +/-    0.96  0.030 / 0.020
G06     52.6           17.2                9.1 +/-    2.00      21.5 +/-    2.00  0.030 / 0.030
G12     201.4          70.4               11.6 +/-    0.39      12.2 +/-    0.39  0.030 / 0.030
G19     97.3           12.8               10.6 +/-    1.22      27.7 +/-    1.22  0.060 / 0.050
G25     301.4          51.0                9.6 +/-    1.78      12.0 +/-    1.78  0.060 / 0.040
G29     305.0          25.1               10.0 +/-    0.94      19.5 +/-    0.94  0.200 / 0.150