PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/30-09:12:40
G01     70.2           32.8                4.1 +/-    0.66       6.7 +/-    0.66  0.030 / 0.060
G07     137.6          29.3                4.6 +/-    0.94       8.2 +/-    0.94  0.040 / 0.060
G11     53.3           29.4                3.3 +/-    0.75       5.8 +/-    0.75  0.100 / 0.350
G13     276.0          36.9                6.5 +/-    1.08      10.0 +/-    1.08  0.120 / 0.340
G15     302.5          15.5                0.8 +/-    2.52       1.9 +/-    2.52  0.060 / 0.120
G17     235.7          71.5                6.7 +/-    0.67       7.0 +/-    0.67  0.040 / 0.130
G19     224.7          44.1                7.7 +/-    1.00      10.5 +/-    1.00  0.040 / 0.040
G28     21.4           58.9                4.2 +/-    0.30       4.8 +/-    0.30  0.040 / 0.050
G30     135.2          61.6                8.0 +/-    0.80       8.9 +/-    0.80  0.040 / 0.080