PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/22-07:42:50
G01     68.1           32.5                6.3 +/-    1.06      10.5 +/-    1.06  0.040 / 0.040
G07     138.6          28.0               10.1 +/-    1.11      18.5 +/-    1.11  0.040 / 0.040
G11     52.4           28.7                5.4 +/-    1.49       9.6 +/-    1.49  0.070 / 0.110
G13     273.4          36.7                6.8 +/-    1.66      10.5 +/-    1.66  0.060 / 0.100
G15     300.4          16.0                3.1 +/-    1.82       7.6 +/-    1.82  0.090 / 0.250
G17     239.6          72.6                9.4 +/-    0.41       9.8 +/-    0.41  0.090 / 0.240
G19     226.2          45.7                9.5 +/-    2.36      12.7 +/-    2.36  0.030 / 0.020
G28     24.8           58.4                8.6 +/-    1.59       9.9 +/-    1.59  0.030 / 0.030
G30     137.2          58.8               10.9 +/-    1.09      12.5 +/-    1.09  0.040 / 0.080