PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/25-05:12:40
G01     319.9          14.6                4.0 +/-    1.30      10.0 +/-    1.30  0.030 / 0.020
G08     259.5          15.3                4.9 +/-    1.51      12.2 +/-    1.51  0.030 / 0.020
G10     71.4           56.5                3.8 +/-    0.70       4.4 +/-    0.70  0.040 / 0.020
G11     304.9          23.1                4.3 +/-    1.62       8.9 +/-    1.62  0.030 / 0.030
G14     288.2          70.5                3.5 +/-    0.62       3.7 +/-    0.62  0.250 / 0.220
G18     96.9           33.8                4.1 +/-    1.26       6.7 +/-    1.26  0.220 / 0.300
G27     225.7          11.1                5.3 +/-    1.51      14.3 +/-    1.51  0.190 / 0.400
G31     176.9          37.3                5.2 +/-    1.33       7.9 +/-    1.33  0.240 / 0.370
G32     355.5          70.7                3.6 +/-    0.83       3.7 +/-    0.83  0.050 / 0.050