PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/02-20:12:40
G01     52.5           26.9               11.2 +/-    1.15      21.0 +/-    1.15  0.140 / 0.230
G06     179.6          19.7               15.6 +/-    1.62      34.5 +/-    1.62  0.130 / 0.260
G11     45.0           17.2                9.3 +/-    1.62      21.8 +/-    1.62  0.030 / 0.060
G13     253.1          32.7               13.6 +/-    1.44      22.6 +/-    1.44  0.030 / 0.050
G15     286.0          16.3               12.2 +/-    1.12      29.3 +/-    1.12  0.050 / 0.050
G17     296.4          79.4               14.4 +/-    0.58      14.6 +/-    0.58  0.040 / 0.050
G19     240.9          57.6               14.5 +/-    0.62      16.8 +/-    0.62  0.030 / 0.040
G28     40.3           56.8               12.7 +/-    0.47      14.8 +/-    0.47  0.030 / 0.030
G30     147.6          42.8               14.6 +/-    1.41      20.3 +/-    1.41  0.100 / 0.340