PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/10-14:27:50
G01     84.5           32.1                5.7 +/-    1.40       9.6 +/-    1.40  0.040 / 0.060
G07     129.1          38.0                6.6 +/-    0.74      10.0 +/-    0.74  0.040 / 0.050
G11     63.7           38.6                5.9 +/-    1.22       8.8 +/-    1.22  0.040 / 0.090
G13     289.0          38.1                5.6 +/-    2.24       8.4 +/-    2.24  0.050 / 0.100
G15     312.3          11.7                4.4 +/-    2.64      11.7 +/-    2.64  0.060 / 0.060
G17     216.8          54.6                7.5 +/-    0.72       9.0 +/-    0.72  0.050 / 0.070
G18     58.7           22.5                5.5 +/-    2.23      11.5 +/-    2.23  0.040 / 0.050
G19     215.6          32.0                6.1 +/-    1.58      10.3 +/-    1.58  0.030 / 0.060
G28     343.8          61.6                5.6 +/-    0.56       6.3 +/-    0.56  0.100 / 0.120
G30     117.6          71.5                6.6 +/-    0.93       6.9 +/-    0.93  0.110 / 0.100