PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/27-04:27:40
G08     275.7          21.7                6.8 +/-    2.61      14.4 +/-    2.61  0.030 / 0.020
G10     38.5           62.2                3.5 +/-    1.06       3.9 +/-    1.06  0.030 / 0.020
G11     315.8          12.5                2.2 +/-   10.97       5.7 +/-   10.97  0.080 / 0.130
G14     249.2          61.0                4.8 +/-    0.67       5.4 +/-    0.67  0.120 / 0.200
G18     79.9           44.2               -4.6 +/-   35.88      -6.3 +/-   35.88  0.130 / 0.190
G21     151.9          25.4                4.3 +/-    1.95       8.3 +/-    1.95  0.160 / 0.130
G24     45.5           18.5                3.4 +/-    2.85       7.8 +/-    2.85  0.030 / 0.020
G27     238.4          22.3                6.4 +/-    1.89      13.4 +/-    1.89  0.030 / 0.030
G31     180.3          20.1                5.8 +/-    1.29      12.7 +/-    1.29  0.060 / 0.090
G32     292.6          75.5                4.5 +/-    0.41       4.6 +/-    0.41  0.070 / 0.150