PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/31-09:12:40
G07     45.9           69.0                4.7 +/-    0.93       5.0 +/-    0.93  0.040 / 0.030
G08     57.0           46.1                3.3 +/-    0.90       4.4 +/-    0.90  0.030 / 0.030
G09     178.1          41.0                5.4 +/-    0.59       7.8 +/-    0.59  0.250 / 0.350
G11     124.1          33.5                5.5 +/-    1.36       8.9 +/-    1.36  0.220 / 0.310
G18     107.0          14.4                4.2 +/-    2.12      10.6 +/-    2.12  0.060 / 0.070
G23     159.7          10.1                4.7 +/-    4.90      13.1 +/-    4.90  0.060 / 0.080
G27     38.0           11.2                3.7 +/-    2.20      10.0 +/-    2.20  0.120 / 0.440
G28     263.3          44.6                5.0 +/-    4.26       6.8 +/-    4.26  0.110 / 0.390
G30     326.6          56.3                4.3 +/-    0.91       5.0 +/-    0.91  0.070 / 0.040