PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/21-21:42:50
G01     314.5          27.5                7.9 +/-    2.49      14.7 +/-    2.49  0.120 / 0.420
G10     93.6           45.7                7.9 +/-    0.29      10.5 +/-    0.29  0.160 / 0.450
G11     296.4          24.5               10.0 +/-    2.67      19.8 +/-    2.67  0.160 / 0.380
G14     314.2          70.2                1.6 +/-    0.67       1.7 +/-    0.67  0.130 / 0.500
G20     113.6          20.4               10.4 +/-    0.95      22.6 +/-    0.95  0.050 / 0.050
G22     305.2          15.5                6.7 +/-    1.81      16.4 +/-    1.81  0.040 / 0.050
G25     93.9           12.1                9.1 +/-    1.77      24.2 +/-    1.77  0.080 / 0.160
G31     171.8          52.8               10.2 +/-    1.12      12.4 +/-    1.12  0.090 / 0.150
G32     24.2           60.0                8.1 +/-    0.50       9.2 +/-    0.50  0.030 / 0.060