PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/11-14:43:10
G01     73.1           32.6                6.1 +/-    1.22      10.2 +/-    1.22  0.040 / 0.050
G07     135.4          29.7                7.6 +/-    1.30      13.3 +/-    1.30  0.040 / 0.050
G11     55.2           33.1                6.1 +/-    1.27      10.0 +/-    1.27  0.090 / 0.110
G13     276.9          38.8                6.7 +/-    2.19       9.9 +/-    2.19  0.060 / 0.100
G15     304.7          14.7                4.0 +/-    0.71       9.9 +/-    0.71  0.050 / 0.080
G17     226.7          63.7                8.4 +/-    1.09       9.3 +/-    1.09  0.080 / 0.100
G19     221.2          40.7                8.9 +/-    1.91      12.8 +/-    1.91  0.030 / 0.050
G28     2.2            61.3                7.0 +/-    0.68       7.8 +/-    0.68  0.050 / 0.040
G30     132.6          63.0                7.5 +/-    0.54       8.3 +/-    0.54  0.090 / 0.110