PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/22-16:27:30
G02     227.2          66.8                7.4 +/-    0.88       8.0 +/-    0.88  0.060 / 0.080
G06     43.6           62.5                6.8 +/-    0.42       7.6 +/-    0.42  0.060 / 0.090
G12     322.6          50.5                5.9 +/-    1.11       7.4 +/-    1.11  0.040 / 0.040
G17     66.4           24.8                6.7 +/-    2.53      13.2 +/-    2.53  0.030 / 0.040
G19     46.9           45.7                6.5 +/-    1.06       8.7 +/-    1.06  0.030 / 0.030
G24     250.3          38.2                9.2 +/-    2.05      13.8 +/-    2.05  0.020 / 0.030