PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/13-08:27:50
G01     63.8           31.6                3.7 +/-    1.30       6.3 +/-    1.30  0.040 / 0.040
G07     140.6          24.4                5.7 +/-    2.28      11.2 +/-    2.28  0.030 / 0.050
G11     50.0           25.7                2.9 +/-    2.71       5.7 +/-    2.71  0.140 / 0.120
G13     268.7          35.9                5.6 +/-    1.50       8.7 +/-    1.50  0.080 / 0.160
G15     297.1          16.4                3.3 +/-    1.35       8.0 +/-    1.35  0.030 / 0.020
G17     250.8          75.8                6.7 +/-    0.29       6.9 +/-    0.29  0.020 / 0.020
G19     229.7          49.3                6.2 +/-    2.75       7.9 +/-    2.75  0.130 / 0.230
G28     31.2           57.4                3.5 +/-    0.48       4.0 +/-    0.48  0.110 / 0.200
G30     140.6          55.4                7.0 +/-    0.44       8.3 +/-    0.44  0.080 / 0.070