PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/27-14:28:10
G02     257.9          77.0                4.3 +/-    0.40       4.4 +/-    0.40  0.080 / 0.110
G05     171.9          19.7                6.5 +/-    1.51      14.3 +/-    1.51  0.120 / 0.120
G06     40.0           51.0                4.4 +/-    0.76       5.4 +/-    0.76  0.250 / 0.240
G12     321.3          61.5                3.4 +/-    0.89       3.8 +/-    0.89  0.180 / 0.270
G17     77.0           17.0                6.0 +/-    1.05      14.1 +/-    1.05  0.030 / 0.040
G19     60.3           38.2                5.1 +/-    1.50       7.6 +/-    1.50  0.030 / 0.040
G24     235.6          30.4                5.2 +/-    1.39       9.0 +/-    1.39  0.110 / 0.150
G25     317.4          20.3                2.6 +/-    1.60       5.7 +/-    1.60  0.090 / 0.120