PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-01:27:50
G10     241.6          18.4               13.1 +/-    1.97      29.9 +/-    1.97  0.060 / 0.060
G13     65.6           34.9                9.4 +/-    0.53      14.9 +/-    0.53  0.040 / 0.070
G15     112.9          56.6               11.8 +/-    0.62      13.9 +/-    0.62  0.060 / 0.110
G16     305.7          15.2                6.7 +/-    3.22      16.5 +/-    3.22  0.050 / 0.130
G20     253.9          38.2               11.6 +/-    1.02      17.4 +/-    1.02  0.180 / 0.600
G21     320.3          51.7               11.2 +/-    1.10      13.9 +/-    1.10  0.140 / 0.530
G26     277.5          19.5                8.7 +/-    1.36      19.5 +/-    1.36  0.020 / 0.040
G29     161.3          64.1               10.8 +/-    1.14      11.9 +/-    1.14  0.030 / 0.050