PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/28-02:12:50
G07     57.9           68.4                6.4 +/-    0.30       6.8 +/-    0.30  0.040 / 0.040
G08     49.5           37.6                4.5 +/-    0.53       6.8 +/-    0.53  0.040 / 0.040
G09     176.8          35.4               10.7 +/-    2.27      16.9 +/-    2.27  0.040 / 0.080
G11     116.8          35.5               10.7 +/-    0.84      16.8 +/-    0.84  0.050 / 0.080
G13     321.1          11.6               -8.3 +/-    5.55     -22.5 +/-    5.55  0.120 / 0.310
G17     198.7          16.6                6.4 +/-    1.22      15.3 +/-    1.22  0.090 / 0.270
G18     100.5          16.3                9.3 +/-    1.69      22.4 +/-    1.69  0.100 / 0.000
G23     161.5          10.1                8.0 +/-    1.54      22.2 +/-    1.54  0.040 / 0.050
G28     272.5          50.7                4.7 +/-    1.21       5.8 +/-    1.21  0.040 / 0.040
G30     330.4          59.1                3.5 +/-    1.07       4.0 +/-    1.07  0.050 / 0.090