PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-14:28:10
G01     104.4          26.6                8.8 +/-    1.01      16.7 +/-    1.01  0.270 / 0.440
G07     111.7          53.0                8.0 +/-    0.67       9.7 +/-    0.67  0.170 / 0.380
G08     41.6           16.6                6.6 +/-    1.41      15.7 +/-    1.41  0.040 / 0.040
G09     173.2          10.3                9.9 +/-    5.38      27.4 +/-    5.38  0.030 / 0.030
G11     83.1           40.4                7.9 +/-    0.57      11.4 +/-    0.57  0.100 / 0.140
G13     309.3          28.4                5.8 +/-    1.10      10.5 +/-    1.10  0.090 / 0.140
G17     206.2          42.7                9.9 +/-    1.04      13.9 +/-    1.04  0.030 / 0.020
G19     209.4          16.6               10.9 +/-    2.80      26.1 +/-    2.80  0.030 / 0.020
G28     322.5          61.1                8.4 +/-    0.70       9.5 +/-    0.70  0.030 / 0.070
G30     21.4           78.2                8.9 +/-    0.86       9.1 +/-    0.86  0.040 / 0.070