PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/07-06:12:50
G01     84.1           32.8                3.5 +/-    1.42       5.8 +/-    1.42  0.030 / 0.040
G07     129.8          40.4                5.8 +/-    1.02       8.4 +/-    1.02  0.030 / 0.040
G11     63.8           37.3                3.0 +/-    0.92       4.6 +/-    0.92  0.140 / 0.220
G13     290.1          36.4                6.2 +/-    2.32       9.7 +/-    2.32  0.120 / 0.230
G15     311.4          12.5                2.7 +/-    1.61       7.1 +/-    1.61  0.050 / 0.050
G17     218.9          59.8                7.4 +/-    1.04       8.4 +/-    1.04  0.070 / 0.050
G19     217.1          33.0                6.2 +/-    1.81      10.2 +/-    1.81  0.070 / 0.080
G28     0.5            61.1                3.8 +/-    0.49       4.3 +/-    0.49  0.050 / 0.080
G30     118.4          70.7                5.3 +/-    1.01       5.5 +/-    1.01  0.040 / 0.050