PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/28-23:42:40
G07     330.5          56.9                8.6 +/-    0.50      10.1 +/-    0.50  0.080 / 0.170
G08     103.9          51.7               10.7 +/-    1.07      13.3 +/-    1.07  0.080 / 0.170
G09     198.1          76.0                9.4 +/-    0.65       9.6 +/-    0.65  0.070 / 0.070
G11     148.4          11.4                9.7 +/-    4.85      26.4 +/-    4.85  0.070 / 0.090
G16     46.3           9.9                 5.5 +/-    4.44      15.4 +/-    4.44  0.030 / 0.040
G23     154.7          42.7               10.9 +/-    0.92      15.2 +/-    0.92  0.030 / 0.050
G27     55.8           31.8                8.2 +/-    1.69      13.8 +/-    1.69  0.040 / 0.040
G28     236.4          29.0                8.9 +/-    1.57      16.0 +/-    1.57  0.040 / 0.040
G30     302.9          37.1                8.1 +/-    1.69      12.4 +/-    1.69  0.090 / 0.660