PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/13-05:58:10
G01     78.2           33.2                3.7 +/-    1.41       6.1 +/-    1.41  0.040 / 0.050
G07     133.5          36.1                7.0 +/-    1.01      10.8 +/-    1.01  0.060 / 0.040
G11     59.2           34.7                4.5 +/-    1.11       7.2 +/-    1.11  0.110 / 0.250
G13     283.9          37.1                5.5 +/-    0.80       8.4 +/-    0.80  0.090 / 0.220
G15     307.4          14.2                1.9 +/-    3.12       4.9 +/-    3.12  0.050 / 0.020
G17     224.5          64.4                7.2 +/-    0.72       7.9 +/-    0.72  0.050 / 0.030
G19     220.0          37.6                7.6 +/-    2.15      11.5 +/-    2.15  0.050 / 0.090
G28     9.8            60.3                4.1 +/-    1.49       4.7 +/-    1.49  0.060 / 0.100
G30     127.3          66.0                7.4 +/-    0.41       8.0 +/-    0.41  0.060 / 0.060