PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/07-10:27:50
G01     80.8           33.0                5.2 +/-    0.59       8.6 +/-    0.59  0.040 / 0.070
G07     131.9          36.9                6.0 +/-    0.57       9.1 +/-    0.57  0.050 / 0.070
G11     60.0           34.5                3.6 +/-    0.63       5.7 +/-    0.63  0.040 / 0.060
G13     287.5          36.6                4.3 +/-    2.00       6.6 +/-    2.00  0.050 / 0.070
G15     310.4          12.7                3.5 +/-    1.35       9.1 +/-    1.35  0.100 / 0.210
G17     221.6          63.6                7.9 +/-    1.07       8.7 +/-    1.07  0.120 / 0.210
G19     218.5          35.9                5.4 +/-    1.50       8.5 +/-    1.50  0.030 / 0.050
G28     5.1            60.7                3.9 +/-    0.66       4.4 +/-    0.66  0.030 / 0.040
G30     122.0          70.7                6.4 +/-    0.51       6.7 +/-    0.51  0.060 / 0.140