PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/16-14:12:50
G01     319.8          16.5                3.9 +/-    1.01       9.3 +/-    1.01  0.040 / 0.020
G08     257.7          14.4                3.8 +/-    3.34       9.5 +/-    3.34  0.040 / 0.030
G10     77.0           53.5                4.1 +/-    0.66       5.0 +/-    0.66  0.040 / 0.040
G11     304.0          22.9                4.0 +/-    0.70       8.2 +/-    0.70  0.050 / 0.050
G14     292.3          70.9                4.5 +/-    0.57       4.7 +/-    0.57  0.140 / 0.270
G18     304.3          42.1                4.1 +/-    1.00       5.7 +/-    1.00  0.130 / 0.240
G20     103.7          30.3                5.3 +/-    1.05       9.2 +/-    1.05  0.060 / 0.070
G31     179.3          36.6                7.1 +/-    1.02      10.9 +/-    1.02  0.050 / 0.090
G32     354.0          70.6                4.1 +/-    0.53       4.4 +/-    0.53  0.080 / 0.170