PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/24-14:12:40
G02     227.6          66.1                8.5 +/-    0.86       9.2 +/-    0.86  0.040 / 0.060
G06     43.3           63.8                7.6 +/-    0.26       8.4 +/-    0.26  0.040 / 0.060
G12     321.8          48.5                6.9 +/-    1.34       8.8 +/-    1.34  0.030 / 0.040
G17     66.6           24.6                6.4 +/-    1.12      12.7 +/-    1.12  0.030 / 0.030
G19     46.2           46.2                6.2 +/-    1.14       8.2 +/-    1.14  0.040 / 0.040
G24     248.9          38.0               10.0 +/-    1.76      15.1 +/-    1.76  0.050 / 0.050