PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/21-05:28:00
G01     78.2           32.1                6.1 +/-    1.30      10.3 +/-    1.30  0.030 / 0.030
G07     131.7          38.4                8.7 +/-    0.62      13.0 +/-    0.62  0.040 / 0.030
G11     62.3           39.4                6.2 +/-    0.81       9.0 +/-    0.81  0.110 / 0.270
G13     283.6          39.0                0.3 +/-    2.88       0.4 +/-    2.88  0.080 / 0.270
G15     307.4          14.4                2.3 +/-    4.29       5.9 +/-    4.29  0.040 / 0.050
G17     219.9          61.7                9.3 +/-    1.11      10.4 +/-    1.11  0.050 / 0.060
G19     217.5          36.8                8.0 +/-    1.26      12.2 +/-    1.26  0.060 / 0.050
G28     346.0          61.5                6.1 +/-    0.52       6.8 +/-    0.52  0.040 / 0.050
G30     122.7          73.7                8.0 +/-    0.49       8.3 +/-    0.49  0.050 / 0.080