PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/22-04:12:30
G08     292.7          23.5                5.4 +/-    0.91      10.9 +/-    0.91  0.040 / 0.030
G10     2.5            63.0                5.1 +/-    1.44       5.6 +/-    1.44  0.030 / 0.030
G14     229.4          47.3                7.1 +/-    1.89       9.3 +/-    1.89  0.040 / 0.030
G18     59.8           53.3                4.3 +/-    1.13       5.2 +/-    1.13  0.030 / 0.020
G21     145.5          41.6                5.9 +/-    1.03       8.4 +/-    1.03  0.040 / 0.080
G24     58.3           27.1                5.5 +/-    1.27      10.2 +/-    1.27  0.040 / 0.070
G27     253.7          31.9                6.1 +/-    1.91      10.2 +/-    1.91  0.090 / 0.140
G32     243.9          66.2                6.5 +/-    0.71       7.0 +/-    0.71  0.070 / 0.110