PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/14-15:28:00
G02     266.8          77.9                7.1 +/-    0.50       7.2 +/-    0.50  0.040 / 0.060
G05     170.4          22.6                9.1 +/-    2.11      18.9 +/-    2.11  0.050 / 0.050
G06     40.1           48.2                7.2 +/-    0.73       9.3 +/-    0.73  0.030 / 0.040
G12     320.4          65.0                7.1 +/-    0.64       7.8 +/-    0.64  0.020 / 0.040
G17     79.0           15.7                7.9 +/-    1.87      19.3 +/-    1.87  0.120 / 0.190
G19     62.7           37.0                7.4 +/-    0.91      11.4 +/-    0.91  0.090 / 0.140
G24     233.6          28.7                8.6 +/-    1.05      15.4 +/-    1.05  0.030 / 0.030
G25     317.6          22.2                6.6 +/-    1.64      13.8 +/-    1.64  0.040 / 0.030