PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/06-19:12:30
G02     214.4          56.4               14.7 +/-    0.95      17.3 +/-    0.95  0.070 / 0.090
G06     62.4           74.9               15.3 +/-    0.34      15.8 +/-    0.34  0.040 / 0.100
G12     318.6          36.5               10.8 +/-    1.20      16.7 +/-    1.20  0.130 / 0.320
G17     55.0           34.4                9.4 +/-    1.85      15.1 +/-    1.85  0.130 / 0.320
G19     33.1           52.8               10.6 +/-    1.11      12.9 +/-    1.11  0.090 / 0.080
G24     267.4          42.3               10.0 +/-    1.83      14.0 +/-    1.83  0.080 / 0.070
G28     120.9          15.5               11.2 +/-    1.60      27.4 +/-    1.60  0.060 / 0.060