PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-05:27:50
G01     86.4           32.5                3.7 +/-    1.01       6.2 +/-    1.01  0.040 / 0.050
G07     128.3          42.3                7.2 +/-    0.62      10.0 +/-    0.62  0.030 / 0.040
G11     66.0           38.4                3.9 +/-    1.03       5.8 +/-    1.03  0.220 / 0.320
G13     292.3          36.0                6.2 +/-    1.72       9.7 +/-    1.72  0.300 / 0.250
G15     312.8          11.8                3.1 +/-    2.93       8.4 +/-    2.93  0.040 / 0.060
G17     217.1          57.6                8.5 +/-    1.01       9.9 +/-    1.01  0.040 / 0.040
G19     216.1          31.1                5.0 +/-    2.17       8.5 +/-    2.17  0.080 / 0.090
G28     356.8          61.3                3.3 +/-    0.87       3.7 +/-    0.87  0.070 / 0.070
G30     114.6          71.9                6.4 +/-    0.99       6.7 +/-    0.99  0.050 / 0.070