PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/29-12:57:50
G07     10.7           66.8                7.2 +/-    0.95       7.8 +/-    0.95  0.110 / 0.100
G08     76.2           52.3                6.1 +/-    0.68       7.5 +/-    0.68  0.120 / 0.120
G09     182.4          58.7                9.2 +/-    0.42      10.6 +/-    0.42  0.090 / 0.190
G11     135.4          23.7                7.2 +/-    1.70      14.5 +/-    1.70  0.090 / 0.220
G23     158.0          23.6                8.7 +/-    1.90      17.5 +/-    1.90  0.030 / 0.040
G27     44.4           23.2                5.8 +/-    2.16      11.8 +/-    2.16  0.030 / 0.040
G28     247.8          35.4                8.2 +/-    1.41      12.9 +/-    1.41  0.120 / 0.170
G30     315.7          47.4                5.6 +/-    1.11       7.3 +/-    1.11  0.130 / 0.120