PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/27-18:58:00
G01     102.4          27.2               10.3 +/-    1.18      19.1 +/-    1.18  0.030 / 0.030
G07     115.5          48.6               10.7 +/-    0.65      13.7 +/-    0.65  0.030 / 0.030
G08     41.5           16.5                7.6 +/-    2.26      18.2 +/-    2.26  0.030 / 0.050
G09     174.7          11.4               11.7 +/-    3.58      31.7 +/-    3.58  0.040 / 0.050
G11     81.6           42.8               10.9 +/-    0.72      15.1 +/-    0.72  0.060 / 0.060
G13     305.8          31.9                9.4 +/-    1.16      15.9 +/-    1.16  0.050 / 0.050
G17     206.7          42.3               13.0 +/-    0.69      18.3 +/-    0.69  0.070 / 0.140
G18     73.7           24.0                9.0 +/-    1.33      17.9 +/-    1.33  0.080 / 0.170
G28     316.6          60.1                9.4 +/-    1.04      10.7 +/-    1.04  0.080 / 0.140
G30     55.5           79.3               11.1 +/-    0.44      11.3 +/-    0.44  0.090 / 0.190