PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/17-20:43:00
G02     25.5           61.3                9.4 +/-    0.84      10.6 +/-    0.84  0.030 / 0.040
G05     147.5          57.0               10.8 +/-    0.64      12.6 +/-    0.64  0.030 / 0.040
G06     51.2           18.7                8.4 +/-    1.98      19.1 +/-    1.98  0.130 / 0.070
G12     199.3          72.1               10.3 +/-    0.80      10.7 +/-    0.80  0.070 / 0.090
G19     94.3           15.7               11.3 +/-    1.88      27.8 +/-    1.88  0.110 / 0.240
G25     304.2          49.7                8.7 +/-    3.26      11.0 +/-    3.26  0.130 / 0.160
G29     302.6          22.6                8.2 +/-    1.88      16.9 +/-    1.88  0.030 / 0.030