PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/11-10:12:40
G01     80.1           33.1                4.9 +/-    0.67       8.1 +/-    0.67  0.060 / 0.120
G07     132.3          36.4                6.7 +/-    0.61      10.4 +/-    0.61  0.100 / 0.120
G11     59.5           34.2                3.5 +/-    0.43       5.7 +/-    0.43  0.050 / 0.070
G13     286.7          36.7                4.2 +/-    2.12       6.5 +/-    2.12  0.050 / 0.070
G15     309.8          13.0                3.1 +/-    0.81       8.0 +/-    0.81  0.050 / 0.040
G17     222.4          64.2                7.7 +/-    0.75       8.4 +/-    0.75  0.030 / 0.050
G19     218.9          36.5                5.8 +/-    1.35       9.0 +/-    1.35  0.030 / 0.040
G28     6.3            60.6                4.0 +/-    0.52       4.5 +/-    0.52  0.030 / 0.040
G30     123.3          70.0                6.5 +/-    0.54       6.9 +/-    0.54  0.110 / 0.220