PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/14-08:27:50
G01     318.0          21.1                2.9 +/-    4.07       6.2 +/-    4.07  0.120 / 0.350
G08     255.3          12.0                6.8 +/-    5.27      18.1 +/-    5.27  0.170 / 0.360
G10     84.8           50.3                4.0 +/-    0.50       5.0 +/-    0.50  0.120 / 0.190
G11     299.9          24.5                5.0 +/-    1.67      10.0 +/-    1.67  0.080 / 0.230
G14     307.3          71.5                3.5 +/-    0.90       3.7 +/-    0.90  0.030 / 0.040
G18     300.7          43.9                4.3 +/-    0.53       5.9 +/-    0.53  0.030 / 0.040
G20     108.0          26.9                5.9 +/-    2.08      11.0 +/-    2.08  0.060 / 0.060
G22     303.2          15.2                1.4 +/-    2.18       3.5 +/-    2.18  0.060 / 0.060
G31     175.0          45.1                8.0 +/-    2.58      10.7 +/-    2.58  0.150 / 0.510
G32     4.0            67.8                4.3 +/-    0.42       4.6 +/-    0.42  0.140 / 0.460