PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/26-18:43:10
G01     319.6          16.1                9.1 +/-    1.52      22.0 +/-    1.52  0.050 / 0.070
G08     259.8          14.2               10.9 +/-    1.97      27.6 +/-    1.97  0.040 / 0.060
G10     75.7           54.9               10.3 +/-    0.60      12.3 +/-    0.60  0.040 / 0.040
G11     305.8          21.4               10.0 +/-    2.80      21.2 +/-    2.80  0.040 / 0.040
G14     290.1          70.0               11.3 +/-    0.57      11.9 +/-    0.57  0.020 / 0.020
G18     100.7          28.8               10.7 +/-    0.92      19.1 +/-    0.92  0.030 / 0.020
G31     177.7          38.6               14.1 +/-    1.01      21.0 +/-    1.01  0.150 / 0.370
G32     1.3            69.2               10.9 +/-    0.29      11.6 +/-    0.29  0.100 / 0.400