PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/14-05:42:40
G01     84.9           32.7                4.4 +/-    0.78       7.3 +/-    0.78  0.040 / 0.050
G07     129.3          41.1                6.5 +/-    0.73       9.4 +/-    0.73  0.040 / 0.060
G11     64.6           37.8                3.0 +/-    0.46       4.6 +/-    0.46  0.050 / 0.060
G13     290.8          36.3                4.6 +/-    0.87       7.1 +/-    0.87  0.050 / 0.070
G15     311.8          12.3                2.0 +/-    1.94       5.2 +/-    1.94  0.130 / 0.260
G17     218.3          59.0                6.3 +/-    0.59       7.2 +/-    0.59  0.090 / 0.230
G19     216.8          32.4                6.4 +/-    1.08      10.6 +/-    1.08  0.040 / 0.040
G28     359.3          61.2                2.9 +/-    0.85       3.2 +/-    0.85  0.040 / 0.040
G30     117.3          70.9                5.4 +/-    0.44       5.6 +/-    0.44  0.060 / 0.090