PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/22-00:43:10
G02     31.6           56.8                9.8 +/-    0.79      11.5 +/-    0.79  0.030 / 0.040
G05     140.2          60.6               13.5 +/-    1.44      15.2 +/-    1.44  0.030 / 0.040
G06     52.8           16.9                7.4 +/-    0.63      17.6 +/-    0.63  0.030 / 0.050
G12     200.7          69.9               11.7 +/-    0.87      12.3 +/-    0.87  0.040 / 0.040
G19     97.7           12.5               11.2 +/-    1.48      29.5 +/-    1.48  0.040 / 0.050
G25     300.8          51.3               10.2 +/-    0.92      12.7 +/-    0.92  0.040 / 0.050
G29     305.3          25.4               11.6 +/-    2.16      22.5 +/-    2.16  0.050 / 0.060