PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/14-06:27:40
G08     308.6          19.5                4.9 +/-    0.84      10.8 +/-    0.84  0.070 / 0.070
G10     337.7          60.9                4.7 +/-    0.46       5.2 +/-    0.46  0.060 / 0.060
G14     218.5          32.8                8.4 +/-    1.47      13.8 +/-    1.47  0.050 / 0.040
G20     40.9           59.6                5.7 +/-    0.88       6.5 +/-    0.88  0.040 / 0.050
G21     136.0          54.6                8.9 +/-    0.44      10.7 +/-    0.44  0.030 / 0.020
G24     71.5           29.5                6.2 +/-    2.20      10.9 +/-    2.20  0.030 / 0.030
G27     274.4          37.1                7.3 +/-    2.72      11.1 +/-    2.72  0.060 / 0.080
G32     224.2          49.9               10.3 +/-    2.18      13.0 +/-    2.18  0.090 / 0.110