PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/31-10:13:00
G07     40.8           69.6                5.1 +/-    0.89       5.4 +/-    0.89  0.040 / 0.030
G08     52.2           40.3                3.7 +/-    0.84       5.3 +/-    0.84  0.030 / 0.040
G09     176.2          37.7                4.6 +/-    1.24       6.9 +/-    1.24  0.030 / 0.030
G11     120.7          33.1                5.6 +/-    1.07       9.2 +/-    1.07  0.030 / 0.020
G17     198.7          12.7                0.6 +/-    8.00       1.6 +/-    8.00  0.210 / 0.250
G18     106.7          14.6                5.6 +/-    1.30      14.0 +/-    1.30  0.130 / 0.260
G23     161.2          12.6                4.1 +/-    3.09      10.7 +/-    3.09  0.250 / 0.260
G27     37.9           10.8                3.1 +/-    3.05       8.4 +/-    3.05  0.220 / 0.420
G28     269.6          50.4                4.8 +/-    2.18       6.0 +/-    2.18  0.170 / 0.350
G30     326.2          55.5                3.7 +/-    0.67       4.4 +/-    0.67  0.140 / 0.260